Taskbar10: Proper NeedsRo_PositionStartMenuForMonitor fix for 22621.2792+ (without relying on disabling a feature flag)

ExplorerPatcher/StartMenu.c

@@ -638,6 +638,18 @@ typedef struct instanceof_WindowsUdk_UI_Shell_ITaskbarSettings // : IInspectable
 } WindowsUdk_UI_Shell_ITaskbarSettings;
 static const WindowsUdk_UI_Shell_ITaskbarSettings instanceof_WindowsUdk_UI_Shell_ITaskbarSettings = { instanceof_WindowsUdk_UI_Shell_ITaskbarSettingsVtbl };
 
+static unsigned __int64 FindTokenByHMONITOR(const StartMenuPositioningData* data, HMONITOR hMonitor)
+{
+    for (DWORD i = 0; i < *data->pMonitorCount; i++)
+    {
+        if (data->pMonitorList[i].hMonitor == hMonitor)
+        {
+            return data->pMonitorList[i].token;
+        }
+    }
+    return 0;
+}
+
 BOOL NeedsRo_PositionStartMenuForMonitor(
     HMONITOR hMonitor,
     HDC unused1,
@@ -724,44 +736,58 @@ BOOL NeedsRo_PositionStartMenuForMonitor(
 
         if (data->operation == STARTMENU_POSITIONING_OPERATION_ADD)
         {
+            unsigned __int64 token = 0;
             if (interfaceVersion == 1)
             {
                 hr = pTaskbarLayoutManager->lpVtbl->ReportMonitorAdded(
                     pTaskbarLayoutManager,
-                    hMonitor,
+                    (unsigned __int64)hMonitor,
                     &instanceof_WindowsUdk_UI_Shell_ITaskbarSettings,
                     NULL
                 );
             }
             else
             {
-                unsigned __int64 result = 0;
                 hr = pTaskbarLayoutManager->lpVtbl->ReportMonitorAdded2(
                     pTaskbarLayoutManager,
-                    hMonitor,
+                    (unsigned __int64)hMonitor,
                     &instanceof_WindowsUdk_UI_Shell_ITaskbarSettings,
                     NULL,
-                    &result
+                    &token
                 );
             }
-            data->pMonitorList[InterlockedIncrement(data->pMonitorCount) - 1] = hMonitor;
+            MonitorListEntry entry = {
+                .hMonitor = hMonitor,
+                .token = token
+            };
+            data->pMonitorList[InterlockedIncrement(data->pMonitorCount) - 1] = entry;
             printf("[Positioning] Added settings for monitor %p : %d\n", hMonitor, data->location);
         }
         else if (data->operation == STARTMENU_POSITIONING_OPERATION_CHANGE)
         {
-            hr = pTaskbarLayoutManager->lpVtbl->ReportSettingsForMonitor(
+            hr = E_FAIL;
-                pTaskbarLayoutManager,
+            unsigned __int64 arg = interfaceVersion == 1 ? (unsigned __int64)hMonitor : FindTokenByHMONITOR(data, hMonitor);
-                hMonitor,
+            if (arg)
-                &instanceof_WindowsUdk_UI_Shell_ITaskbarSettings
+            {
-            ); // TODO Doesn't work when the 2nd interface is used. Needs further investigation
+                hr = pTaskbarLayoutManager->lpVtbl->ReportSettingsForMonitor(
+                   pTaskbarLayoutManager,
+                   arg,
+                   &instanceof_WindowsUdk_UI_Shell_ITaskbarSettings
+               );
+            }
             printf("[Positioning] Changed settings for monitor: %p : %d\n", hMonitor, data->location);
         }
         else if (data->operation == STARTMENU_POSITIONING_OPERATION_REMOVE)
         {
-            hr = pTaskbarLayoutManager->lpVtbl->ReportMonitorRemoved(
+            hr = E_FAIL;
-                pTaskbarLayoutManager,
+            unsigned __int64 arg = interfaceVersion == 1 ? (unsigned __int64)hMonitor : data->pMonitorList[data->i].token;
-                hMonitor
+            if (arg)
-            );
+            {
+                hr = pTaskbarLayoutManager->lpVtbl->ReportMonitorRemoved(
+                   pTaskbarLayoutManager,
+                   arg
+               );
+            }
             printf("[Positioning] Removed settings for monitor: %p\n", hMonitor);
         }
     }

ExplorerPatcher/StartMenu.h

@@ -336,13 +336,13 @@ typedef struct WindowsUdk_UI_Shell_TaskbarLayoutManagerVtbl // : IInspectableVtb
     {
         HRESULT(STDMETHODCALLTYPE* ReportMonitorAdded)(
             __RPC__in WindowsUdk_UI_Shell_TaskbarLayoutManager* This,
-            __RPC__in HMONITOR hMonitor,
+            __RPC__in unsigned __int64 hMonitor,
             __RPC__in void* _instance_of_winrt_WindowsUdk_UI_Shell_ITaskbarSettings,
             __RPC__in void* _unknown_shellViewToRectMap);
 
         HRESULT(STDMETHODCALLTYPE* ReportMonitorAdded2)(
             __RPC__in WindowsUdk_UI_Shell_TaskbarLayoutManager* This,
-            __RPC__in HMONITOR hMonitor,
+            __RPC__in unsigned __int64 hMonitor,
             __RPC__in void* _instance_of_winrt_WindowsUdk_UI_Shell_ITaskbarSettings,
             __RPC__in void* _unknown_shellViewToRectMap,
             /* [out] */ __RPC__out unsigned __int64* result);
@@ -350,21 +350,21 @@ typedef struct WindowsUdk_UI_Shell_TaskbarLayoutManagerVtbl // : IInspectableVtb
 
     HRESULT(STDMETHODCALLTYPE* ReportMonitorRemoved)(
         __RPC__in WindowsUdk_UI_Shell_TaskbarLayoutManager* This,
-        __RPC__in HMONITOR hMonitor);
+        __RPC__in unsigned __int64 hMonitor);
 
     HRESULT(STDMETHODCALLTYPE* ReportMonitorChanged)(
         __RPC__in WindowsUdk_UI_Shell_TaskbarLayoutManager* This,
-        __RPC__in HMONITOR hMonitor,
+        __RPC__in unsigned __int64 hMonitor,
         __RPC__in LPRECT _unknown_lpGeometry);
 
     HRESULT(STDMETHODCALLTYPE* ReportSettingsForMonitor)(
         __RPC__in WindowsUdk_UI_Shell_TaskbarLayoutManager* This,
-        __RPC__in HMONITOR hMonitor,
+        __RPC__in unsigned __int64 hMonitor,
         __RPC__in void* _instance_of_winrt_WindowsUdk_UI_Shell_ITaskbarSettings);
 
     HRESULT(STDMETHODCALLTYPE* ReportShellViewButtonBounds)(
         __RPC__in WindowsUdk_UI_Shell_TaskbarLayoutManager* This,
-        __RPC__in HMONITOR hMonitor,
+        __RPC__in unsigned __int64 hMonitor,
         __RPC__in void* _instanceof_winrt_WindowsUdk_UI_Shell_Bamo_ShellViewButtonBounds);
 
     END_INTERFACE
@@ -375,12 +375,19 @@ interface WindowsUdk_UI_Shell_TaskbarLayoutManager // : IInspectable
     CONST_VTBL struct WindowsUdk_UI_Shell_TaskbarLayoutManagerVtbl* lpVtbl;
 };
 
+typedef struct _MonitorListEntry
+{
+    HMONITOR hMonitor;
+    unsigned __int64 token;
+} MonitorListEntry;
+
 typedef struct _StartMenuPositioningData
 {
     DWORD location;
     DWORD operation;
     DWORD* pMonitorCount;
-    HMONITOR* pMonitorList;
+    MonitorListEntry* pMonitorList;
+    DWORD i;
 } StartMenuPositioningData;
 
 #define STARTMENU_POSITIONING_OPERATION_ADD 0

ExplorerPatcher/dllmain.c

@@ -128,9 +128,6 @@ HANDLE hSwsSettingsChanged = NULL;
 HANDLE hSwsOpacityMaybeChanged = NULL;
 HANDLE hWin11AltTabInitialized = NULL;
 BYTE* lpShouldDisplayCCButton = NULL;
-#define MAX_NUM_MONITORS 30
-HMONITOR hMonitorList[MAX_NUM_MONITORS];
-DWORD dwMonitorCount = 0;
 HANDLE hCanStartSws = NULL;
 DWORD dwWeatherViewMode = EP_WEATHER_VIEW_ICONTEXT;
 DWORD dwWeatherTemperatureUnit = EP_WEATHER_TUNIT_CELSIUS;
@@ -221,6 +218,12 @@ DWORD dwUpdatePolicy = UPDATE_POLICY_DEFAULT;
 wchar_t* EP_TASKBAR_LENGTH_PROP_NAME = L"EPTBLEN";
 HWND hWinXWnd;
 
+#ifdef _WIN64
+#define MAX_NUM_MONITORS 30
+MonitorListEntry hMonitorList[MAX_NUM_MONITORS];
+DWORD dwMonitorCount = 0;
+#endif
+
 HRESULT WINAPI _DllRegisterServer();
 HRESULT WINAPI _DllUnregisterServer();
 HRESULT WINAPI _DllCanUnloadNow();
@@ -1826,15 +1829,18 @@ void UpdateStartMenuPositioning(LPARAM loIsShouldInitializeArray_hiIsShouldRoIni
             spd.pMonitorCount = &dwMonitorCount;
             spd.pMonitorList = hMonitorList;
             spd.location = dwPosCurrent;
+            spd.i = (DWORD)-1;
             if (bShouldInitialize)
             {
                 spd.operation = STARTMENU_POSITIONING_OPERATION_REMOVE;
                 unsigned int k = InterlockedAdd(&dwMonitorCount, 0);
                 for (unsigned int i = 0; i < k; ++i)
                 {
-                    NeedsRo_PositionStartMenuForMonitor(hMonitorList[i], NULL, NULL, &spd);
+                    spd.i = i;
+                    NeedsRo_PositionStartMenuForMonitor(hMonitorList[i].hMonitor, NULL, NULL, &spd);
                 }
                 InterlockedExchange(&dwMonitorCount, 0);
+                spd.i = (DWORD)-1;
                 spd.operation = STARTMENU_POSITIONING_OPERATION_ADD;
             }
             else
@@ -2575,7 +2581,7 @@ INT64 Shell_TrayWndSubclassProc(
         }
         case WM_HOTKEY:
         {
-            if (wParam == 500 && lParam == MAKELPARAM(MOD_WIN, 'A') && global_rovi.dwBuildNumber >= 25921 && bOldTaskbar == 1)
+            if (wParam == 500 && lParam == MAKELPARAM(MOD_WIN, 'A') && (bOldTaskbar && bHideControlCenterButton || global_rovi.dwBuildNumber >= 25921 && bOldTaskbar == 1))
             {
                 InvokeActionCenter();
                 return 0;
@@ -10081,7 +10087,7 @@ int RtlQueryFeatureConfigurationHook(UINT32 featureId, int sectionType, INT64* c
 #if !USE_MOMENT_3_FIXES_ON_MOMENT_2
         case 26008830: // STTest
         {
-            if (bOldTaskbar)
+            if (bOldTaskbar == 1)
             {
                 // Disable tablet optimized taskbar feature when using the Windows 10 taskbar
                 //
@@ -12677,7 +12683,7 @@ DWORD Inject(BOOL bIsExplorer)
     // - 23545.1000
     BOOL bPerformMoment2Patches = IsWindows11Version22H2Build2134OrHigher();
 #endif
-    if (!bOldTaskbar)
+    if (bOldTaskbar != 1)
     {
         bPerformMoment2Patches = FALSE;
     }
@@ -12949,36 +12955,6 @@ DWORD Inject(BOOL bIsExplorer)
                     VnPatchDelayIAT(hWindowsudkShellcommon, "ext-ms-win-security-slc-l1-1-0.dll", "SLGetWindowsInformationDWORD", windowsudkshellcommon_SLGetWindowsInformationDWORDHook);
                 }
             }
-
-            if (bOldTaskbar)
-            {
-                MODULEINFO mi;
-                GetModuleInformation(GetCurrentProcess(), hWindowsudkShellcommon, &mi, sizeof(MODULEINFO));
-
-                // Fix ReportMonitorRemoved in UpdateStartMenuPositioning crashing, *for now*
-                // We can't use our RtlQueryFeatureConfiguration() hook because our function didn't get called with the feature ID
-                // TODO Need to check again later after this feature flag has been removed
-                // E8 ?? ?? ?? ?? 48 8B 7D ?? 84 C0 74 ?? 48 8D 4F 08
-                PBYTE match = FindPattern(
-                    hWindowsudkShellcommon,
-                    mi.SizeOfImage,
-                    "\xE8\x00\x00\x00\x00\x48\x8B\x7D\x00\x84\xC0\x74\x00\x48\x8D\x4F\x08",
-                    "x????xxx?xxx?xxxx"
-                );
-                if (match)
-                {
-                    match += 5 + *(int*)(match + 1);
-                    windowsudkshellcommon_TaskbarMultiMonIsEnabledFunc = match;
-                    printf("wil::details::FeatureImpl<__WilFeatureTraits_Feature_Servicing_TaskbarMultiMon_38545217>::__private_IsEnabled() = %llX\n", match - (PBYTE)hWindowsudkShellcommon);
-                    rv = funchook_prepare(
-                        funchook,
-                        (void**)&windowsudkshellcommon_TaskbarMultiMonIsEnabledFunc,
-                        windowsudkshellcommon_TaskbarMultiMonIsEnabledHook
-                    );
-                }
-
-                printf("Setup windowsudk.shellcommon functions done\n");
-            }
         }
     }
 

ExplorerPatcher/utility.c

@@ -1,7 +1,6 @@
 #include "utility.h"
 #include <Wininet.h>
 #pragma comment(lib, "Wininet.lib")
-#include <TlHelp32.h>
 
 RTL_OSVERSIONINFOW global_rovi;
 DWORD32 global_ubr;